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amy290
26.11.2019 •
Mathematics
Identify the sampling technique used to obtain a sample. a group of people are classified according to height and then random samples of people from each group are taken. a. convenience sampling . b. stratified sampling . c. systematic sampling . d. random sampling .
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Ответ:
B. Stratified sampling will be used to obtain a sample.
Ответ:
D. (4,2)
Step-by-step explanation:
Find the point that is in the dark region